Machine for winding armatures



Oct. 28, 1952 E. w. COLLINS 2,615,639

MACHINE FOR WINDING ARMATURES Filed Deo. 25, 1949 18 Sheets-Sheet l n ^/5 YS n A s ks 4. Smm

Oct. 28, 1952 y Filed Deo. 23. 1949 E'. W. COLLINS MACHINE FOR WINDING ARMATURES i8 Sheets-Shed 2 G- 28, 1952 E. w. coLLlNs MACHINE FOR WINDING ARMATURES 18 Shets-Sheet 4 Filed-Dec. 25, 1949 i I l l IIIIIIIIJ 1 Oct. 28, 1952 E. w. COLLINS MACHINE FOR wINnING ARMATuREs 18 Sheets-Sheet 5 Filed Dec. 23, 1949 Oct 28 l95? E. w. coLLlNs MACHINE FOR wmnmc; ARMATURES- 18 Sheets-Sheet 6 Filed Dec. 25, 1949 Oct. 28, 1952 y E, W. COLLINS MACHINE FOR WINDING ARMATURES 18 Sheets-Sheet 7 Filed Dec. 23, 1949 OGL 28, 1952 E. w. COLLINS MACHINE FOR WINDING ARMATURES 18 Sheets-Sheet 8 Filed Dec. 23. 1949 rro/eNE-Y Oct. 28, 1952 E. W. COLLINS MACHINE FOR WINDING ARMATURES 18 Sheets-Sheet 9 Filed Deo. 25, 1949 E. W. COLLINS MACHINE FOR WINDING ARMATURES oct. 2s, 1952,l

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Patented ct. 28, 1952 MACHINE FUR WINDING ARMATURES Edward -W. CollinsfAnderson, Ind., ,assignor to General Motors Corporation, Detroit, Mich., a

corporation of Delaware Application December Z3, 1949, Serial 140.134,7'81

17 Claims.

This invention relates to the winding of a slotted armature core with wires and its object is to provide a winding machine which will vwind coils so that all of the end wires or leads of the coils extend from the outer portions of the core slots and at that end of the core adjacent to which the commutator is located. Since all of the coil leads extend from the core nearthe periphery thereof, it is easier to make the connections of these leads with the proper commutator bars and less space is required between the commutator and the core.v l

Further objects and advantages of thepresent invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred embodiment of the present invention 4is clearly'shown.

In the drawings:

Figs.. 1, 2 and 3 form a side view of the machine.

Fig. 1A is a fragmentary end view in the direction of arrow IA rof Fig. 1.

Fig. 4 is a fragmentary sectional view on line 4--4 of Fig. 1.

Figs. 5, 6 and 7 form a plan viewof the ma-k chine.

Figs. 8, 9 and 1-0 on same sheet with Fig. 5 are sectional views, respectively, on lines 8 8, 9 9 and lli-I of Fig. 5.

Figs. 11 and 12 are sectional views, respectively, on lines II--II and I2-I2 of Fig. 2.

Fig. ,13 is an enlarged sectional view yon line .I3-I3 of Fig. 6.

Fig. 14 is a sectional view on line I4--I4 of Fig. 2. l

Figs. 15 and 16 .are sectional views, .respectively, on lines I-I5 and I6-I6 of Fig. 14.

Fig. '17 is a sectional view on line II-r-I'I of Fig. 2.

Fig. 18 is `a sectional view on lineIS-IB of Fig. 2.

of Fig. 27. f

Fig'. 28 is a view in the direction of arrow l28 Fig. 29 is a sectional view on line 29-29 of Fig. 1.

Fig. 30 vis an enlarged `view of the threaded head in the direction of arrow 30 of Fig. l.

Fig. 31 is a sectional view on line 3I-3I of Fig.. 3,0. v

Fig. 32 is an enlarged sectional view online 32.-52 of Fig. 31 and shows one of the threader shoes. f

,Fig.. 34A is a fragmentary, sectional view ony line34A-'34A of Fig. 34.

Fig. 35 is a Asectional view on linev 35--35 of Fig, 5. v Figs. 36--40 are perspective views showing steps 'in the use of the machine.

' Leg frame Illy (Fig. 1) supports a plate II land leg frame l2 (Fig. 2) supports a plate I3. lPlates II'and I3 support bars I4 connected attheir 'lef-t end, as shown in Figs. 1A and 5, by plate I5 land connected at their right end, as shown in Figs. 2 and '11, by plates ISb and I5a (Fig. 22) which support a plate I6 which supports a plate I1 which lappears at the right -end of Fig. 6. The `bars I4 (Fi-g.` 18) provide'rails engaged by rolls I8 journaled on rods I9 supported by bars 20.'

shaft chuck `B (Fig. 2.) near the right end of n Fig. 19 is a sectional view ,on line I 9`|9 of Fig. 18..

Fig. 20 is an enlargement of a fragment of Fig. 18. l Fig. 2l is a sectional view on lines 2I-`2I of Figs. 2 and 18.

Fig. 22 is a sectional view on line 22-,-22 of Fig. 21.

Fig. 23 is a .diagram villustrating chuck grip-y )Bars 20 are connected at their'leftend lby a plate 2l (Figs. 1A and 5) and at their right end by plate 22 (Fig. 12). The bars 20 and the `conl necting plates 2| and 22 provide a carriage which supports an "armature clamp A (Fig. 1) near the left end of the carriage and an armature 'the carriage. vThe carriage is movable underneath a threading device C (Figs. 1 and 2').

The `carriage is reciprocated by pressure fluid means providing a'cylinder 25 (Fig. 3) supportedat its left end by `plate I6a. The cylinder 25 is supported at the right end by a brace 2-'I ex` tending diagonally toward the leg frame I2 and Valve 3'Ihas a base 3Ia attached .to a .plate 26 supported by leg frame I2 (Fig. 2). 1 :The chuck unit B (Figs. 2 and 22) includes a block .40 attached to carriage bars 20 and having `a recess 42 for receiving a block 4I (Fig. 1.4) reand 22) supported by bearing plate 12. f is connected as shown in Fig. 1'1 by pins 13 with 3 ceived by notches 43 in bars 28 and attached thereto and extending between bars I4 and attached to a plate 44 thereby retaining the carriage bars 29 upon the rails I4. Block 40 (Fig. 22) supports a cap portion 45 attached by screws 46 (Fig. 6). The block and cap provide a bearing for a shaft 41 having an internal conically tapered portion 48 for receiving the external conically tapered surfaces of the collet chuck members 49 integral with a hub 50 into which there is threaded the shank 5I of a screw having a head 52 which carries a pin 53 whose axis is intersected by the axis of the chuck shaft 41 and is at right angles thereto. The pin 53 pivotally supports a lever 54 providing at its lower end a pin 55 for engagement by the hook 56 of a lever 51 pivoted on a pin 58 supported by the plate I6 which, together with the plate |6a, is attached to bars I4. Lever 51 is urged downwardly by a spring 59 bearing against the head of a pin 69 guided by a bushing 6I threaded into plate I1 and secured in adjusted position by lock washer 62. The adjustment of bushing 6I adjusts the compression of spring 59. 54 (Fig. 23) has cylindrical surfaces 63 engageable with a pla-ne surface of an annular boss 64 at the right end of shaft 41. The surfaces 63 have a radius indicated by the arrow 63T, and the center of these surfaces is at 63p, which is above the center of pin 53. When the carriage bars 28 are moved left and carry the chuck unit B with them, the pin 55 engages the hook 56 of lever 51, asshown in Fig. 23. This causes the lever 54 to turn counterclockwise on pin 53. Likewise the center 63p ofthe curvature of surface 63 moves counterclockwise and the result is that the lever 54 fulcrums on the surface 64 of shaft 41 and pin 53 is moved to the right to cause the collet chuck 'members 49 to be pulled against the conical sur- 55 of lever 54.

To effect the opening of the chuck, the upper vend of lever 54 is engaged at a certain time in the machine cycle by rod R, as shown in Fig. 24. This causes pins 66, carried by lever 54, t0 move into engagement with lugs 61 supported by shaft 41; and, after pins 66 have engaged lugs 61, lever 54 turns upon lugs 61 clockwise thereby causing the pin 53 to move to the left to move the collet members 49 away from the surface 48 of shaft 41.

To provide for rotation of the chuck and arma- '-ture shaft supported thereby the shaft 41 provides a gear 10 meshing with a rack 1I (Figs. 21 Rack 1I a couplingr 14 threadedly connected with a couplin'g 15 which is threadedly connected with a rod 16 which, as shown in Fig. 14,v is connected by a piston 11 within a cylinder 18 supported by a plate 19, which, as shown in Fig. 12, is attached to plate 22 so that the cylinder 18 will move with thecarriage bars 28. The weight, which over- `hangs from plate 22, is supported by a plate 88 V`(Figs. 12 and 14) attached to a plate 8| supported by leg frame I2.

The lever The cap 45 of block 40 (Figs. 12 and 14) supports a bracket 82 which supports a screw stud 83 (Fig. 21) retained in the desired position of angular adjustment by a nut 84. Stud 83 pivotally supports a ratchet 85 which, as shown in Figs. 6 and 18, carries a rod 86 extending parallel to the axis of the ratchet. The stud 83, which is relatively fixed, supports a cross pin 81 and is surrounded by a torsion spring 88, one end 89 of which is hooked around the rod 86 and the other end of which is hooked around the pin 81. If the ratchet 85 is not prevented from rotating counterclockwise (Fig. 18) by a pawl to be described, the spring 88 operates to move the ratchet counterclockwise until the rod 86 engages the pin 81, as shown in Figs. 18 and 20. To effect movement of ratchet 85 clockwise (Fig. 18), there is a pawl 9| pivoted on a pin 92 supported by a bracket 94 and urged upwardly by a spring 93 received by a pocket in bracket 94. Bracket 94 is a split, clamp bracket (Figs. 15 and 16) which a screw 95 clamps around the coupling 14 of Fig. 17. The pin 13 has an extension of reduced diameter at its lower end (Fig. 17) received by a groove 96 in the bracket 94 whereby the clamp bracket 94 is non-rotatable with respect to the coupling 14 along which it may be axially adjusted.

Each time the piston 11 moves toward the right in Fig. 14 or to the left in Fig. 18, the pawl 9| engages theratchet 85 to move it a certain distance clockwise (Fig. 18) depending on the adjustment of bracket 94 relative to the coupling 14. The travel of piston 11 is determined in one direction by the abutment of bracket 94 with kthe block 40 and in the other direction by the abutment of a U-block 91 (Figs. 14 and 15) with the tubular boss 98 extending from plate 19. The U-block 91 may be one of several blocks of different thicknesses to determine the extent vof the right movement (Fig. 14) of piston 11.

After a certain number of movements of piston 11 the rod 86 will have been moved such a distance away from the pin 81 that at about the end of the movement of the carirage to the left the rod 86 will engage a pin |00 attached to a hub IOI (Fig. 28) connected to a shaft |02 journaled in brackets |83 supported by plates |04 attached to rails I4 (Fig. 27).. Hub I0| carries a weight |85. Shaft |02 is attached to a hub I D6 carrying the rod R. Movement of pin |00 by rod 86 causes rod R (normally located as shown in Fig. 2) to move into a horizontal position. rl` 'hereafter, as left movement of the carriage continues, rod R is in position to be engaged by lever 54 to effect the ungripping of the collet chuck as shown in Fig. 24. It is therefore apparent that at a certain time in the machine cycle the armature A is released from the chuck unit B in the carriage so that it may be supported by the clamp unit A shown in Fig. 29.

The clamp unit A comprises a split clamp bracket I|0 receiving a split liner ||I adapted to engage the armature core. The clamping is effected by a lever |I2 having a hub surface II3 coaxial with a center point |I4 which is below the center of a pin I|5 connecting the lever II2 with an eye II6 of a rod I|1 passing through the bifurcations I|8 .and |I9 of the bracket and receiving nuts |20. `When the lever I|2 is vertical, the armature core can be received loosely within the liner III. When lever I|2 is turned down into the position shown, the armature is clamped since the center of eye ||6 

